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SDHC controller (SBC-i.MX51)
The particular chip I was using Freescale KL03 will retain the current received byte in the data buffer until you read it, even after you have started sending the next one. I was out of sync, so that each time I was writing an SPI byte, waiting for transmission and then reading from the buffer, I was actually getting the previous result and not the current one. Application Notes – Freescale Semiconductor This application note discusses the effects of transient electrical disturbances on Freescale Frsescale – NetBurner.
Upon dumping the raw blocks on the card.
Sign up using Facebook. Dual and Single e to MHz.
How to configure SDHC module?
Electrostatic discharge voltage, human body model. Enabling Embedded Systems—Accelerating Success Application Notes – Freescale Semiconductor. And I’m able to read and write data to it properly. Your consent to our cookies if you continue to use this website.
Post as a guest Name. Quad and Dual e to MHz. I just had the exact same problem, which turned out not to be a problem with fteescale SD card, but with my SPI interfacing.
microcontroller – Data misaligned when writing to SDHC card over SPI – Stack Overflow
The data itself is misaligned one to the left. AN – Freescale Semiconductor. In summary, ensure that you are sending the 7E immediately after the 00 response to your write command.
Additionally, it appears that the two dummy bytes and the token were also written. The latter I suspect because I have a 16GB card which is working fine. Correcting for the shift you get: As a consequence there was a single byte lag in every SPI transaction.
Skill 4GB microSD card. Hitachi HF13 introduced in ; New Mold. Sign up or log in Sign up using Google. Learn how to harness the compute power of the Altivec Engine and leverage libraries developed by Mentor Graphics.
Reading a data block works, I am able to read the location of partition 1 and read the first sector of that partition However when attempting to write a block, I never see a response token.